'Most parents don't see one child die before them but this has happened twice to us. I don't know how we are going to cope.'

Neighbours reported hearing screams coming from the family home before an ambulance and police were called.

One neighbour, who did not want to be named, said: 'My granddaughter and grandson were playing out in the garden when they heard people screaming.

'Then Susan's friend came round and we heard her say Connor was dead. It is an absolute tragedy.'

A police spokesman said: 'Police are investigating the circumstances which led to the death of a 14-year-old boy found dead in his bed by his family. There is not thought to be any third-party involvement in his death.'